How About a Head Massage, Sir? What a barber can teach us about selling sustainability services

I went for a haircut the other day. Nothing ambitious, just the usual trim. Twenty minutes later, the barber held up the mirror, rotated my chair and asked in a warm, almost therapeutic voice, “Head massage, Sir?”

I hesitated. He looked at me in the mirror and added, “You have been travelling a lot, Sir. Head is looking stressed.”

I was not aware that a head could look stressed. But once he mentioned it, mine suddenly felt remarkably tired. So I agreed to ten minutes.

The haircut had acquired an extension.

What interested me was not that he had sold me something more. It was how effortlessly he had done it. There was no sales pitch. He simply made the next purchase seem like the natural completion of the first.

I had fallen for it knowingly.

Since you are already here

A few weeks earlier, I had gone to an ophthalmologist. The technician checked my spectacles and eye pressure. Everything seemed routine. Just as I was preparing to leave, she asked, “Sir, when did you last get your retina checked?”

I tried to remember.

She continued gently, “You are seventy now. And you are so busy. You may not find time to come again. Since you are already here, why don’t we do it today?”

There are four dangerous words in marketing: since you are already here.

Twenty minutes later, my pupils were dilated and I was waiting for a retinal examination.

Again, I did not feel sold to. I felt looked after. That is precisely why the suggestion worked. The recommendation was wrapped in concern, convenience and logic.

Have you tried this

At a food store, the technique was different. I had reached the checkout counter with exactly what I intended to buy. The woman scanned the items and then picked up a small packet.

“Sir, have you tried this new mouth freshener?”

I had not.

“Very nice. Sugar-free also.”

She gave me a sample. One packet immediately joined my shopping bag.

Nobody had asked whether I wanted to spend more. The question was much gentler: would I like to try something?

Its good for you

Shoe shops understand this equally well. You choose a pair after considering colour, fit, comfort and price. The difficult decision is over. Then the salesman produces a bottle.

“This protector is good for these shoes, Sir, especially in the Mumbai rains.”

You look at your expensive new shoes and suddenly leaving the shop without protecting them feels careless.

Then comes the cleaner.

The shoe has created its own little ecosystem of additional purchases.

Can one be shared?

Restaurants use the same psychology, but with better timing. Nobody tries to sell you dessert when you sit down. They wait until dinner is over and then ask.

“Dessert?”

Everyone says no.

The waiter does not leave.

“We have a very nice warm chocolate fondant today. Takes about twelve minutes.”

Someone hesitates.

“Can one be shared?”

The waiter has won.

Four intelligent adults who rejected dessert thirty seconds earlier are soon holding four spoons.

Small additional amount

Hotels have perfected another version. You arrive tired. Your room is ready. Then the receptionist says, “Sir, for a small additional amount we can upgrade you to the executive floor. Breakfast included.”

The phrase “small additional amount” is doing a lot of work. Once you have accepted the larger purchase, the extension suddenly feels modest.

Vendor to adviser

The neighbourhood repair shop has its own technique. You take in a watch for a new battery. The man replaces it, then looks at the strap.

“This will go soon.”

Until that moment, the strap had seemed perfectly healthy. Now you can see nothing except impending failure.

“Change it.”

At that moment, something subtle happens. The repairman has moved from vendor to adviser. Once that transition takes place, selling becomes easier because you are no longer evaluating a product. You are evaluating his judgement.

Across all these situations, the pattern is similar. The barber does not sell a massage; he extends the haircut into relaxation. The ophthalmology technician extends a routine check into prevention. The shoe salesman extends purchase into protection. The waiter extends dinner by twelve pleasant minutes.

The cleverest selling often does not feel like selling. It feels like someone noticing something you have overlooked.

That brings me, somewhat dangerously, to sustainability consulting.

Routine GHG emission inventory

Suppose a company calls a consultant to prepare a greenhouse-gas inventory. The assignment is straightforward: Scope 1, Scope 2, perhaps Scope 3, data collection, emission factors, analysis and report.

A conventional consultant may complete the inventory, present the findings, submit the invoice and leave.

A smarter consultant notices that Scope 3 emissions account for a large part of the footprint and asks, “Have you looked closely at your suppliers?”

The client has not.

So the first assignment opens the door to a second: supplier sustainability assessment.

During that exercise, the consultant discovers that several critical suppliers operate in locations facing water stress, flooding or heat risk.

“Since we are already mapping the supply chain, should we also assess physical climate risk?”

Assignment number three appears: climate-risk and adaptation assessment.

Once climate risk and emissions are on the table, management begins asking what the company should actually do.

“Should we develop a decarbonisation pathway and estimate what it will cost?”

Assignment number four becomes decarbonisation roadmap and transition planning.

Then the CFO enters the conversation. If investment is required, how should it be financed? Can some projects qualify for green loans or sustainability-linked finance?

Assignment number five becomes sustainable finance strategy.

Finally, someone asks, “How do we explain all this to investors, customers and the Board?”

Assignment number six becomes ESG disclosure and sustainability reporting.

We began with an emissions inventory.

We now have six assignments.

My barber would understand this perfectly.

But here the comparison becomes uncomfortable.

Is this smart consulting or sophisticated cross-selling?

Sometimes it is simply cross-selling. Sustainability consulting is perfectly capable of creating too many studies around one problem. A consultant who sees every meeting as a chance to manufacture another assignment will eventually lose something more valuable than the next fee: trust.

But the opposite behaviour can also be irresponsible. A consultant may see an obvious adjacent problem and say nothing because “it is outside scope.” That is contractually neat, but not always professionally useful.

If an ophthalmologist sees something that deserves further examination, I would rather she tell me. I can still decline.

Perhaps that is the key distinction. The ethical question is not whether a consultant sells another service. It is whether the consultant is manufacturing a need or recognising one.

That distinction matters particularly in sustainability because the issues are genuinely interconnected.

Carbon connects to energy. Energy connects to technology. Technology connects to capital expenditure. Capital expenditure connects to finance. Supply chains connect to Scope 3 and climate risk. Circularity connects to procurement and product design. ESG performance connects to disclosure, and disclosure influences investors and lenders.

These are not six unrelated services. They are often six doors opening off the same corridor.

The consultant who understands the corridor can create much more value than the specialist who enters one room, completes a narrowly defined task and leaves. The real skill lies not in pushing more services, but in seeing the system around the original problem.

There is another reason this kind of selling works. Trust has already been established.

The barber has your head in his hands. The technician has just measured your eye pressure. The shopkeeper has helped you choose. The waiter has served you through dinner. Their next suggestion arrives after a small relationship has already formed.

Consulting works the same way.

It is difficult to sell six services to a new client in the first meeting. Trying to do so may be the fastest way to lose the client. But if the first assignment is done well, the second conversation becomes easier because the consultant understands the organisation better and the client has seen how the consultant thinks.

The second service is therefore not sold only by a proposal.

It is sold by the quality of the first service. Cross-selling is often understood as persuading a client to buy more. I think it is better understood as earning the right to suggest what should come next.

The sequence matters: do one thing well, notice the adjacent issue, explain why it matters, show the connection, and then ask. The client must always be free to say no.

A good barber asks, “Head massage, Sir?” He does not start massaging before I answer.

Perhaps the ethics of selling sustainability services are no more complicated than that. See the next need, explain it, and ask. If the answer is no, finish the haircut beautifully and let the customer leave.

Because pushing too hard can have its own consequences. In finance, a haircut means accepting less than the full value. Consultants can suffer a haircut too—not necessarily on their fees, but on something more valuable: credibility and trust.

So perhaps the lesson from my barber is rather simple.

Sell the head massage if it genuinely helps. But never risk a haircut on trust.

---